This is just a short note to say this project isn't dead. I'm still pasionate about completing this project.
I had some real-world things that prevented me from working on this for about 2 months, but since then I've been converting this from AGK Tier 1 code (a version of basic) to AGK Tier 2. Tier 2 uses the AGK libraries in c++ so although I've not been progressing and tuning the mechanics I have been spending slowly converting my basic code to c++.
The main reason for converting to c++ is to take advantage of the improved precision variable types and math functions which aren't available in Tier 1. This will mean I can generate bigger maps and (hopefully) improve the physics. But we'll see.